NASA technology is usually associated with the far reaches of space, but research from the government agency is surprisingly close at hand: hair dryers, water softeners, skin cream, landmine removal!
NASA even has a cool interactive tool called NASA Home and City to showcase all the ways space research affects us back here on Earth.
英语学习：
https://www.english-corpora.org/ 语料库
https://www.scribens.com/ 语法纠正
https://www.italki.com/community/exercises 口语老师教学
https://sspai.com/post/52532 蒙哥阅读器介绍
https://sspai.com/post/56339 值得看的外语频道，到时候翻翻去
https://www.peacocktv.com/ 美国有线电视台在线播放
https://linggle.com/ 语料查询
http://www.en998.com/sentence/ 句子语法成分分析
几个收藏夹里的英文网站
https://www.toptenreviews.com/
http://confusedlaowai.com/awesome-links-chinese-learners/
https://www.travelchinaguide.com/intro/
工具类：
http://www.findyoutube.com/ 下载youtube视频，或者在YouTube视频链接中的youtube.com变成youtubepp.com
http://v.ranks.xin/ 视频下载
https://knb.im/mp/ 微信公众号排版
https://www.logosc.cn/ logo设计
https://pan.naifei.cc/english/ 百度云链接转换
https://www.apowersoft.cn/free-online-screen-recorder 在线录视频
看不懂的：
https://unbug.github.io/codelf/#%E5%88%97%E8%A1%A8
https://www.jezzamon.com/fourier/index.html
爬虫：
https://zhuanlan.zhihu.com/p/112461147 flask框架搜索
